A27W-10T with handle spring inching safety valve (safety valve) to open and close automatically according to the working pressure of the pressure system, usually installed in the closed system equipment or pipeline protection system security. Automatically open when the equipment or pipeline pressure exceeds the safety valve set pressure, pressure relief, to ensure that the media pressure equipment and piping under the set pressure, the protective equipment and pipe work properly to prevent accidents and to minimize losses. 
 The valve structure has two categories: spring and leveraged. Spring-loaded valves and valve seat seal by a spring force. Leveraged by the force of the lever and hammer. With the large capacity needs, have a pulse valve, also known as pilot safety valve, the main valve and auxiliary valve. When the pipe medium pressure exceeds the set pressure value, the auxiliary valve first opens, the media along the catheter into the main valve and main valve to open, the increased media pressure is reduced. 
 Safety valve emissions determines the opening height, diameter and valve seat can be divided into two types: inching opening height of the seat inner diameter (1/15) - (1/20), full-Kai (1/3) ~ (1/4). 
 In addition, with the different application requirements, closed and not closed. Closed-discharge media is not compromised, all along the required exit discharge, generally used for toxic and corrosive media. Not closed in general for non-toxic or non-corrosive media. 
 Nominal pressure: PN1.6-60.0Mpa 
 Operating temperature: -400-450 ° C 
 Nominal diameter: DN10-400mm 
 Connection type: flanged, threaded, welded 
 Material: 304,316,304 L, 316L, SS316, WCB, CF3, CF8, cast steel, cast iron, ductile iron, forged steel, stainless steel, copper and so on.